Revenue - Summary of Net Sales Disaggregated by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 173,874	$ 88,538	$ 308,672	$ 158,204
Wholesale
Disaggregation Of Revenue [Line Items]
Net sales	115,586	60,462	214,989	113,372
Direct to consumer
Disaggregation Of Revenue [Line Items]
Net sales	57,278	27,688	91,964	43,992
After-sales service
Disaggregation Of Revenue [Line Items]
Net sales	$ 1,010	$ 388	$ 1,719	$ 840